North Carolina Law....

"(d) Salvage Motor Vehicle.-Any motor vehicle damaged by collision or other
occurrence to the extent that the cost of repairs to the vehicle and rendering the vehicle safe for use on the public streets and highways would exceed seventy-five percent (75%) of its fair retail market value. value, whether or not the motor vehicle has been declared a total loss by an insurer. Repairs shall include the cost of parts and labor. Fair market retail values shall be as found in the NADA Pricing Guide Book or other publications approved by the Commissioner."

20-71.3. Titles and registration cards to be branded.
Motor Vehicle certificates of title and registration cards issued pursuant to G.S. 20-57 shall be branded. As used herein 'branded' means that the title and registration card shall contain a designation that discloses if the vehicle is classified as (a) Flood Vehicle, (b) Non-U.S.A. Vehicle, (c) Reconstructed Vehicle, (d) Salvage Motor Vehicle, or (e)Salvage Rebuilt Vehicle or other classification authorized by law. Any motor vehicle damaged by collision or other occurrence which is to be retitled in this State shall be subject to preliminary and final inspections by the Enforcement Section of the Division, and the Division shall refuse to issue a title to a vehicle which has not undergone a preliminary inspection. Any motor vehicle which has been branded in another state shall be branded with the nearest applicable brand specified in this section, except that no junk vehicle or vehicle that has been branded junk in another state shall be titled or registered. A motor vehicle titled in another state and damaged by collision or other occurrence may be repaired and an unbranded title issued in North Carolina only if the cost of repairs, including parts and labor, does not exceed seventy-five percent (75%) of its fair market retail value. value and satisfactory evidence is given to the Division that the vehicle would be eligible for the issuance of an unbranded title in the state in which it is titled. The Commissioner shall prepare necessary forms and may adopt regulations required to carry out the provisions of this Part 3A. The title shall reflect the branding until surrendered to or cancelled by the Commissioner."